21023141344 has 24 divisors (see below), whose sum is σ = 41404517280. Its totient is φ = 10507708416.

The previous prime is 21023141323. The next prime is 21023141369. The reversal of 21023141344 is 44314132012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31224 + ... + 207415.

It is an arithmetic number, because the mean of its divisors is an integer number (1725188220).

Almost surely, 2^21023141344 is an apocalyptic number.

It is an amenable number.

21023141344 is a deficient number, since it is larger than the sum of its proper divisors (20381375936).

21023141344 is a wasteful number, since it uses less digits than its factorization.

21023141344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241402 (or 241394 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21023141344 its reverse (44314132012), we get a palindrome (65337273356).

The spelling of 21023141344 in words is "twenty-one billion, twenty-three million, one hundred forty-one thousand, three hundred forty-four".